//同时发送异步代码的次数
let ajaxTimes=0;
export const request = (params) => {
  ajaxTimes++;
  // 显示加载中效果
  wx.showLoading({
    title:'加载中',
    mask:true,
  })
  //定义公共的url
    // url:"https://api-hmugo-web.itheima.net/api/public/v1/categories"
    const baseUrl="https://api-hmugo-web.itheima.net/api/public/v1";
    return new Promise((resolve, reject) => {
      wx.request({
        ...params,
        //传递过来的url与公共路径进行拼接
        url:baseUrl+params.url,
        success: res => {
          resolve(res.data.message)
        },
        fail: err => {
          reject(err)
        },
        complete:()=>{
          ajaxTimes--;
          if(ajaxTimes===0){
            //关闭等待框
            wx.hideLoading();
          }    
        }
      });
    })
  }
  